Description

 Nylon insert has low coefficient of friction (will not damage bolt threads), high resilience, low chemical activity and relatively great hardness Locks uniformly over entire range of bolt thread tolerances and has low, even torque scatter, permitting repeated predictable tightening torques Manufactured to IFI Standard 100/107 Meets SAE Grade 8 strength requirements Identified by six symmetrically spaced marks on the chamfered surface on the top of the nut or two circumferential notches on the corners of the nut